Comptonia 



Myricaceae 



365 



o 50 



Map 753 



Salix cordata Muhl . 



Map 

 Comptonia peregrina L.I Coulter 



50 

 755 



18. Salix cordata Muhl. Heartleaf Willow. Map 753. This willow is 

 infrequent throughout the lake area, becoming progressively less frequent 

 southward and probably entirely absent from the southwestern part. It pre- 

 fers a moist soil but does not demand a very wet soil such as is found in 

 bogs and marshes. Salix cordata var. angustata Anders, is a narrowleaf 

 form which I have from Wabash County. The species freely hybridizes and 

 I have several specimens of each of two of its hybrids, S. cordata ) : nigra 

 and S. cordata X sericea. 



Newf. to B. C, southw. to Va., Mo., Colo., and Calif. 



19. Salix glaucophylla Bebb. Blueleaf Willow. Map 754. Very local 

 except along the sides of the dune facing Lake Michigan where it is more 

 or less frequent. Away from the lake it is found in bogs and swamps. The 

 variety brevifolia Bebb, which has been reported by Peattie and by Pepoon, 

 is a shortleaf form which I do not regard as having any taxonomic 

 standing. 



Eastern Que. to Alberta, southw. to N. B., Maine, and the Great Lakes. 



57. MYRICACEAE Dumort. Bayberry Family 

 1874. COMPTONIA Banks 



1. Comptonia peregrina (L.) Coulter. (Myrica asplenifolia L.) For a 

 discussion of the nomenclature see Rhodora 40: 408-412. 1938. Sweet- 

 FERN. Map 755. Infrequent to frequent or local in acid soils, sometimes 

 forming large colonies. It is a shrub mostly one and a half to two and a 

 half feet high and usually found in black, sandy soil in open places in pin 

 oak and black oak woods. 



N. B. to Sask., southw. to N. C, Tenn., and Ind. 



60. JUGLANDACEAE Lindl. Walnut Family 



Pith of twigs chambered; staminate catkins thick, sessile or short-stalked; stamens 

 8-40, glabrous; nuts with a network of rough projections (in ours); husk not 

 splitting 1881. JuGLANS, p. 366. 



Pith of twigs not chambered; staminate catkins slender, long-stalked; stamens 3-10, 

 pubescent; nuts more or less angled but smooth; husk splitting. . 1882. Carya, p. 367. 



